At some point in the game, you'll receive a mysterious text message from an unknown person telling you to come meet him or her down on the docks at the southernmost tip of Algonquin. Thereafter, this location will appear as a question mark on the map. You can go there at your leisure (strangely, our GPS gave us dead end directions to the locale on multiple occasions, so you may be better off simply getting there on your own, employing the old-fashioned "towards the icon" GTA3/VC/SA method). You'll find the character who seeks out your skills waiting on a restaurant-side pier, admiring the view.

Remember a character named Patrick, from earlier? Well he was a McReary, and so too is this guy you're looking for, a high ranking police officer named Francis. Francis claims to know everything Niko has done, and he isn't lying. When he rattles off a few crimes he knows Niko committed, Niko begins to listen, only realizing that Francis would like to build somewhat of a symbiotic relationship between the two of them. As Francis tells Niko, as long as Niko looks out for Francis, Francis won't look out for Niko. Get it?

And just like that, Call and Collect, your first mission from Francis begins. Francis dispatches you towards an area at the north end of Algonquin, right alongside the East Borough Bridge. More specifically, you're seeking out a pier off of Union Drive East, so get driving! When you arrive nearby, ditch your stolen vehicle and go to the arrow designated by the yellow dot on your HUD. You'll get a great view of the surrounding area and get some further instruction on what to do from here.